Self-locking pin



Nov. 17, 1936.

A. J. PEPIN 2,061,478

SELF LOCKING PIN Filed A ril 28, 1936 Patented Nov. 17, 1936 UNITED STATES PATENT OFFICE SELF-LOCKING PIN Augustus J. Pepin, Sebeka, Minn.

Application April 28, 1936, Serial No. 76,823

3 Claims. (01. 853) This invention relates to a self-locking pin which may be used for instance but not necessarily, in connecting a trailing vehicle to a draft vehicle.

It is more particularly aimed to provide a locking pin or the equivalent having a hook on which a lock is pivoted so as to normally maintain an inclined position, the hook being eccentrically disposed on the pin and the lock being weighted at one end and the pin also having a recess therein to house the weighted part of the lock when inserting or removing the pin.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawing illustrating an operative embodiment.

In said drawing:-

Figure 1 is a view showing the improved pin in elevation and as connected to draft means, the latter being fragmentary and partly in section;

Figure 2 is a cross sectional view taken substantially on the line 2-2 of Figure 1, and

Figure 3 isa horizontal sectional view taken on the line 33 of Figure 2.

Referring specifically to the drawing, the pin has an elongated body at IU optionally equipped with an eyelet or head I l at the upper end 30 thereof. In one side of the pin at the lower end a slot or recess I2 is provided and depending from the body II] is an integral but bendable hook I3.

Said hook I3 is bendable so that a lock member M at an opening I5, may be pivoted on the hook and the latter thereupon bent to the closed position of Figure 1. One end of the said lockin member or bar 14 is weighted as at l6, so that it will normally hang in the full line position of Figure 2, with the upper end thereof engaging the lower end of the body it]. However when the pin is applied or removed, the locking member may be brought into a substantially vertical position wherein the end I6 is disposed within the recess or slot l2 as suggested by dotted lines in Figure 2.

By way of example the pin is shown as passing through openings ll of a draft pole or member Hi. It being clear from the foregoing, that when the pin is applied or removed through the openings H, the locking member i4 is in the dotted line position of Figure 2 and that when the pin is in the applied position, the locking member I4 is in the full line position of Figure 2, so that it will thwart any abnormal motion or undue tendency to disengage the openings l1.

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention:-

1. A locking pin of the class described having a body, a hook depending from one end of the body, a locking bar pivoted on said hook 10 said locking bar being weighted at one end whereby its lighter end will engage the lower portion of the body, said lower portion of the body providing a stop to maintain the bar in an inclined position, and said body having a recess at the 15 lower end open at one side thereof to receive said weighted end to permit the bar to aline with the body incidental to application and removal of the pin.

2. A locking pin of the class described hav- 20 ing a body, a hook depending from one end of the body, a locking bar pivoted on said hook said locking bar being weighted at one end whereby its lighter end will engage the lower portion of the body, said lower portion of the 25 body providing a stop to maintain the bar in an inclined position, and said body having a re-. cess at the lower end open at one side thereof to receive said weighted end to permit the bar to aline with the body incidental to application and removal of the pin, said hook being integral with the body and bendable so that the bar may be applied to the hook and the latter thereupon closed.

3. A locking pin of the class described having a body, a hook depending from one end of the body, a locking bar pivoted on said hook said locking bar being weighted at one end whereby its lighter end will engage the lower portion of the body, said lower portion of the body providing a stop to maintain the bar in an inclined position, and said body having a recess at the lower end open at one side thereof to receive said weighted end to permit the bar to aline with the body incidental to application and removal of the pin, said hook being integral with the body and bendable so that the bar may be applied to the hook and the latter thereupon closed, said hook being eccentrically disposed with respect to the body and having the space enclosed thereby substantially alined with the said recess of the body.

AUGUSTUS J. PEPIN. 

